Wheel construction.



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WHEEL CONSTRUCTION.

APPLICATION FILED AUG. 14, 1913.

1,088,375. Patentd 11611.24, 19141 4 Y 2 SHEETS-HHET l.

H. W. SANFORD. WHEEL CONSTRUCTION. APPLIGATION FILED AUG.14, K1913V1,0889375. Patented Feb. 24, 1914i.

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l VI. SANFORD, OF KNOXVILLE, TENNESSEE.

WHEEL CONSTLUGTION.

Specicaton of Letters Patent.

Patented lleb. 2d, 1914i..

e alipneanonaiea August 14,1913. serial no. 784,798.

To c/.ZZ whom 'it muy concern Be it known that l, HUGH W. SANFORD, a

citizen of the United States, residing atv Knoxville, in the county-ofKnox and State of Tennessee, have invented certain new and usefulimprovements in llVheel Const-ru@ tions, of which the following is aspecilicaf tion, reference being `had therein to the ac-V in the hub anannular channel and inserting through the pedestal box casting crosskeys or bolts which when inposition have their central or intermediateportions resting in the channel oi the hub member. ln such structures,it has been necessary to form the bolts perfectly straight, and owing to.this fact the surface contact between. the walls of the channel of thehub is relatively small. The longitudinal vibration of the hub will,owing to the relatively small wearing surface `pri-)sented between thekey'or pin, tend to soon destroy or wear the key.

One of the objects of the present invention isto provide a structurewherein a curved key can. be employed successfully whereby a relativelyextended wearing or abutting surface is presented between the key andthe flange of the hub.

i further object of the invention is to reduce friction between thelocking parts by the interposition of anti-friction bearingsconveniently located between the locking keyor bolt andthe Aflange ofthe hub.

ln the accompanying drawings is illustrated an embodiment of theinvention, but it is to be understood. that the construction shown maybe varied materially and the .forms changed without departing from thenature and. principle of the invention so long as the principles aremaintained and embodied in such various modified structures.

Figure l is a longitudinal section through the wheel hub and pedestalcasting member, showing the invention applied, Fig. 2 is a cross sectionthrough the line 2-2 of Fig. l, Fig. 3 is a View similar to Fig. lshowing `a modified form, and Fig. 4; is a cross section on the linelr-4 of Fig. 3.

The car body is represented in the drawings bythe' letter A, Bdesignating the axle which, as usual in such structures, is carried bythe'car body through` the intermediate pedestal box or casting C. Thiscasting C isl formed substantially-fcup-shaped and has on its outerperiphery 'or edge a channeled part c formed with an internal keyreceiving channel o and an inwardly extending flange o2. The side wallsof the casting C are conveniently straight, as shownin Fig. 2, at C',there# by reducing the diameter as compared with the other diameter ofthe casting, the flange and the part c being formed on a true circle,the center of which is the axis of the hub, the

flange terminating at the side part C. The

pedestal .casting thus formed is somewhat oblong, as shown in Fig. 2,the smaller dia meter being slightly greater than the diameter of thehnb member presently to be described. The lower portion of the pedestalcasting C in line with the part 0 is conven-l iently open as at c, thelength of this open part extending from the lower ends of the sidelmembers C, while the flange part c4 corresponding to the part c2 iscarried from the ends of the side walls in the curve of a true circlecorresponding with the line e2, thus corresponding with the flangedportion c5 of the pedestal casting part and forming a channel for thepurposes presently to be stated.

D designates the hub having conveniently a closed outer end and abearing flange d at its inner end. This flange Z isloeated a shortdistance from the extreme end of the hub and has convenicntlya verticalbearing face as at d. The diameter of the flange part al is less thanthe inner diameter of the cup-shaped pedestal casting, so that the hubcan be readily inserted with its flanged end into the said casting.

E designates a series oranti-.friction rollers having studs e in theirends, the outer ends of which. when the rolls are in plad` enter anannular `groove e in the outer end of Jthe hub.

'F designates the metallic plate convenof the end plate is convenientlyriveted to theextreme end of the hub part -by the rivets f, while' theinner end of the plate projects below and serves to retain the end ofthe roller bearings E in position in the hub when the hub is removed.

Mounted on the inner end of the hub is a circular race way member Gponveniently consisting of two correspondingly formed plates having adepending flange g forming one member of afball bearing. Between theliange g and the flange d of the hub are placed a series of balls I-I.The bearing G is conveniently, as stated, in two parts, the ends ofwhich are united by outstanding flanges g riveted together in anyconvenient manner. The bearing thus formed is so positioned that itsouter portion will lie approximately within the plane of the inner partof the key way c.

J represents the keys or securing bolts formed of metal which may be,although not. necessarily restricted, of rectangular cross section.These keys have their cent-ral por- 4tions bent to conform substantiallyto the curvature of the hub, while their outer end portions aretangential or substantially straight with reference to the center part.The ends of the keys are beveled and the entire length'of the key issuch asto extend 'from the'top of the channel c downwardly into thespace between the parts ol and 05,

so that a bearing of ample dimensions is provided for each end of thekey, retaining' it in position against the end thrusts of the hub. Thekeys, asA will be seen'` rextending from the seats or flanged part ofthe pedestal casting into proximity and around the side of the hub,4serve as effective locking keys with an extended surface Contactbetween the keysl and the hub member, and owing to the position of theball bearing interposed between the same and the flange d, friction isgreatly reduced whileffth'e parts are rmly and satisfactorily heldinplace, practically all wear being eliminated. To retain the keys inplace, a wide locking bar K is ernployed, the same passing through theflange parts c4 and c5, as shown in Fig. l, the bar occupying a positioncentrally between the lower 'ends of the keys: The ends of this bar areconveniently turned down or otherwise formed for securing it inposition. When it is desired to remove the hub, all that is necessary isto remove the bar K and the keys J may then be moved about the axis ofthe hub until the upper straight end lies parallel with the sides C, asshown in dotted lines in Fig. 4l. In this position, the key can bereadily removed from. the box and the hub removed with its ballbearings. Any convenient form or shape of hub may be employed and theball raceV G applied owing to its divided character. vWhen it isnecessary to remove the roller bearings E, all that is necessary is toremove the rivets holding the cup-shaped member F and slip the same outfrom the ends of the hub. It may be noted that the hub is prevented frommoving inwardby the end part contacting with the end of the axle, as isusual.

In Figs. l and 5 a structure similar to that of the other figures isshown, but the ball bearing is omitted. Otherwise, the construct-ion isthe same, in that the pedestal box C4 is substantiallythe sameconstruction, the axle B and the hub D are the same except that theflange Z3 is positioned some` what forward from that shown in the otherfigures. The keys J are designed to engage directly with the flange (Z3.In Fig. l the method of'removing'the key is clearly shown in dottedlines.

As above suggested, the key may be 'of diiferent cross sections, but thesquare type is desirable. In connection, however, with the use of theball bearings between the key and the hub, it has been ascertained thata key of circular cross section may be ernployed if desired.

As far as I am aware, I am the first `to provide a ball bearing for thelocking keys between the hub and the pedestal `member anlalso the firstto invent a structure lwherein a curved key can be readily ein- .ployedfor uniting the hub to the pedestal box. 'I therefore do not wish to belimited to the detailed construction shown. Obvi ously the ball bearingcan be used withl straight keys.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is Awith a key receiving part, of a hub memberhaving a flanged part, a key interposed between said key receivingportion and flanged part, and an anti-friction bearing with which thekey engages. v

2. The combination with a pedestal portion having a hub receiving endformed with a key receiving part, of a hub having a portion with whichthe key is adapted to engage, a key carried by the pedestal part, and ananti-friction bearing between the hub part and the key.

3. The combination with a pedestal part having a portion for receivingthe ends of a key, of a hub part having a flange projection, a keyinterposed between the flange and the said pedestal portion, ananti-friction bearing between the key and the lange, comprising a seriesof balls, and means foi` retaining. the balls in position.

4. The combination with a pedestal partv having a chambered outer endand a key opening in its wall, of a hub part, a key part insertiblethrough said openingand having a portion bent toconform substantially tothe conteur of the hub, and means for retaining the key part removablyin position. l

5. The combination with a pedestal part and a hub part and means forlocking the same in posit-ion comprising a curved key part and liangemembers oppositely dis posed with relation to the key part for securingthe pedestal and hub in posit-ion,. and means for removably securing thekey part in place, substantially as described.

6. The combination with a pedestal member having a channeled upperportion, substantially straight side portions and a flanged lowerportion, of a hub member having a iianged part, a plurality of keymembers curved in part to engage the hub and having relatively straightterminal portions' and fitted between the flanges, and means forretaining the key parts removably in position.

7. In a car struct-ure, the combination with an axle and pedestal part,said pedestal part having an integral substantially' cupshaped` wall forthe reception of the end of the hub part, of a hub part and lneansexterior of the hub for locking the parts in position, said meanscomprising a. curved key member with means for removably securing thekey in'place.

8. The combination in a car structure, of an axle and a pedestal part,of a hub and a curved key for locking the hub to the pedestal, said keybeing insertible and remov able through the wall of the pedestal part.9. The combination with the axle and pedestal part of a plurality ofremovable curved keys interlocking the parts .to secure the sametogether, the ends ot' the keys extend-` ing tangentially relative tothe body thereof.

10. The combination with an axle and pedestal part., of a hub part, aplurality of removable curved keys, means for retaining the keys inposition for normally securing the hub to the pedestal, and means 'forpermitting the removal of the keys.

l1. The combination with 'the axle and pedestal part of a hub kparthaving a bearing shoulder and a key part having a portion eurvedtoconform substantially to the curvature of the hub, the pedestal parthaving an opening in its wall for the insertion' and removal ol the key,and means at said opening for securing` the key part in place.

l2. The combination with an aXle part and a pedestal part, a hub partprojecting into the pedestal part, said hub part `being closed at itsouter end and having a flanged` inner end, ot a transversely arrangedkey menber and an anti-'friction bearing interosed between saidtransversely arrange liey nember and said fiange.

13. 1n a car wheel'strueture, the combina:

tion `with a pedestal or body part having its Y outer end recessed andprovided with-an inwardly projecting iange, of a hub part hav ing anoutwardly extending flange at its inner end, two oppositely disposedkeys fit ted between said flanges, and means independent of the keys forretaining the same removably in place.

14. In a wheel structure, the combination with a pedestal part and a hubpart, of a key member for securing the same in relative position, of ananti-friction bearing interposed between the pedestal part and hub partcomprising a divided race way and a series of balls, and means forsecuring the parts of the race way together.

. I15. The combination with a pedestal box and ahub, of two oppesitelydisposed keys havirig their intermediate portions bent to conform to thecontour of one of the members and an. interposed removable member forprevent-ing the removal of the keys.

16. In a ear, the combination with an axle and pedestal, of a hubremovably secured to the axle, a series of rollers in the hub havingprojecting end parts` and a plate secured within the inner end of thehub and having an outer flange and an inner flange,the latter projectingbelow the end parts of the rollers, the pedestal having a hollow walloverlying the hub part, and a removable key interposed between the hollow wall of the pedestal and said hub part.

17. The combination with a pedestal member having a part fashioned toreceive the end of a wheel hub and formed with a key receiving vpart, ofa hub member having a flanged part, a key interposed between'stid keyreceiving portion and flanged part, and a plurality of anti-frictionbearings interposed between the key and said flanged part.

18. The combination with a pedestal mem ber having a part fashioned toreceive the end of a wheel hub, and lhaving an integral key receivinggroove, of a hub member having a {iange at its inner endantifrietionbearings positioned on the hub to engage. said iange, a key positionedin the groove of the pedestal member, and a bearing plateinterposedbetweeri the side of the key and said bearings.

19.` In a wheel structure, the combination with a pedestal part, havingan opening in ,its bottom wall, a hub part positioned within thepedestal part, and means removably connecting the hub part to thepedestal part comprising a pair et opposed curved keys insertible andremovable through said opening, and means 'for holding the keys inplace. 4 l20. In a wheel structure, the combination with a pedestalpart, having an opening in its bottom wall, a hub part positioned with.

in the pedestal part, and means removably .gz l 1,088,375

- connecting the hub part to the pedestal part In testimony whereof Iafx my signature compris' g a pair ofbopposed curved keys in presence oftw'o Witnesses. nsertbleand remov 1e through said opening, said, keyshaving ends offset from the HUGH W' SANFORD' general curvature of vthebody thereof, and Witnesses:

means nterposedbetween Said offset ends T. L.. CARTY, to retain the keysin place. MARY MCDONOUGH.

copies o! this paient my be nbta'inc for :ive cents each, 'by addressingthe "Commissioner o! Patents, "Washirigtom1 D. C.

